Security has also been increased on transit systems in major cities across Canada.

The Toronto Transit Commission issued a statement Wednesday afternoon saying it has implemented heightened security across the entire transit system following the “tragic events this morning in Ottawa.”

The public transit system also said riders can “expect to see increased visibility of transit enforcement officers and Toronto Police on subway trains and in subway stations.”

B.C. Transit Police said it is also stepping up security measures and “will be extra vigilant in preserving the safety of the transit system for all.”

More buildings, events closed or under lockdown:

The Rideau Centre, a shopping mall in downtown Ottawa, was also under lockdown after reports shots fired near the mall. The lockdown has since been lifted and police clarified that an incident did not occur near the Rideau Centre.